function U = initfcm_M(cluster_n, data_n)
% 随机生成k*n的0~1之间数值的矩阵
U = rand(cluster_n, data_n);
% 将矩阵按列相加，形成k*1
col_sum = sum(U);
% col_sum(ones(cluster_n, 1), :)将k*1复制n行,形成k*n.
U = U./col_sum(ones(cluster_n, 1), :);
